tree-free paper; wood-free paper
Paper made from non-wood fibers such as hemp, bamboo, cotton, or recycled materials. Used in environmental and industrial contexts.
This notebook is made of tree-free paper.
The use of wood-free paper is increasing out of consideration for the environment.
再生紙 is recycled paper, which may still be made from wood pulp, while 非木材紙 specifically refers to paper made from non-wood fibers.
Compound of 非 (non-), 木材 (wood, timber), and 紙 (paper). A modern technical term.